When a protein is synthesized on fixed ribosomes, it is threaded into the lumen of endoplasmic reticulum (ER).
Every eukaryotic cell has an endoplasmic reticulum (ER). The ER is arranged systematically into a web-like maze of radiating tubules and flattened sacs stretching all over the cytosol.
The tubules and sacs are all believed to interlink, so that the ER membrane forms an extended sheet bordering a single internal space. This highly complicated space is known as the ER lumen.
The ER traps selected proteins from the cytosol during their synthesis.
The two kinds of proteins include:-
- transmembrane proteins, which are only partially moved across the ER membrane and are submerged in it, and
- water-soluble proteins, which are completely transported across the ER membrane and are discharged into the ER lumen.
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Answer:
C. Air Pollution because light is needed to do photosynthesis as well as carbon dioxide. Temperature is also affecting the rate of photosynthesis (temperature too high the enzymes are denatured) so the answer would be C.
<span>This is a barrier island. These typically are formed as a way of protecting the mainland from storms and erosional forces. In addition, barrier islands typically form parallel to the mainland and in chains. These islands can allow wetlands to form once enough sand has built up near the shoreline.</span>
<span>Active and passive transport help to maintain homeostasis because they transport fluid/water/materials across the plasma lemma (cell membrane). All of these materials need to exist in certain ratios for the cell to function properly. </span>
Myofibril. Thick filaments consist of myosin, held in place by titin filaments
